The new update on the investigation comes a week after two teens, 16 and 19, were stabbed following an incident at a school hall in Calbourne Avenue.
Emergency services were called to the venue at around 9pm on March 22 after a large group crashed the private party.
Police have revealed that members of the group were armed and are also believed to have assaulted and robbed members of the public during the ordeal.
The force has confirmed today (March 29) that they are working with the British Transport Police to trace the group, who are believed to have travelled to the hall from Barking, Dagenham and Elm Park by bus and train.
READ MORE: Police appeal for witnesses to Elm Park stabbing as arrest total reaches twelve
A total of twelve arrests have been made in connection to the incident, with no charges at this stage.
A Metropolitan Police spokesperson said: “The violence seen on Saturday evening has no place in our society and it will not be tolerated.
“We will work with our colleagues from the British Transport Police, our partners in Havering, Redbridge and Barking & Dagenham councils as well as the local community to ensure those responsible are held to account for their actions.”
